I've a problem I don't know how to solve. I've downloaded Cesium-1.29 and made a small program to display a track (polyline) in a mountain area. Locally on the development system the track shows up. When I move everything to a webserver the mountain area shows up, but not the track.
What is the problem?
Have a look at: home.kpn.nl/udo00026/Cesium_3D_World.html
I'm pretty I miss some understanding.
try...
polyline : {
followSurface : false,
}
Something I noticed...
your map.entities._entities.length is 1, and if you look at it...
map.entities._entities._array[0] you'll see it's the polyline you're adding. So it's there, just not "visible" for some reason. I have also added other polylines to your project just using the console and they are not showing up.
It has to be something to do with how you are configuring your viewer, at least that's my bet. Trying playing around with this online cesium playground regarding polylines.
Hope that at least adds some insight.
Related
I am using the platform Ushahidi Web-2.7.3 , see: http://ti5.net.br/provedorlegal.com.br, and when I zoom in beyond a certain level, the clustered markers disappear from the map. I also tested this on an older version of a site, see: http://movimentofichalimpa.org/mapa, where the clustered markers do not disappear on zooming in, but just become ungrouped, as is normal with a cluster strategy. How can I make the markers remain on the map when zooming in?
Ushahidi actually uses OpenLayers under the hood -- the images may come from Google, but the Javascript library is pure OpenLayers. These markers are actually generated by adding what is known as a context to the style attribute of the OpenLayers.Layer.Vector and an associated Cluster.Strategy. There is a good example of it working properly here: OpenLayers cluster example and if you look at the Javascript source you will see how it is done: view-source:http://dev.openlayers.org/releases/OpenLayers-2.13.1/examples/strategy-cluster-threshold.html by defining a radius in the context of the styleMap.
The reason that your example isn't working is that there is actually a script error being triggered, which is stopping the clustering/styling from being performed. The styles are defined in the file ushahidi.js. If you open a Javascript debugger you will see the error for yourself that is firing before the ushahidi.js functions are called to determine the number of features in the cluster and therefore the radius of the markers.
The actual error is http://ti5.net.br/provedorlegal.com.br/index.php/json/cluster?s=1401591600&e=1404183599&z=9, but I have no idea why, as the OpenLayers is the minified version which is very hard to debug. You might find moving your application to OpenLayers directly will help, as it will be easier to debug, and it also works on mobiles, which I know is one of the reasons people like to use Ushahidi.
Im not sure how but thats the only conclusion I can come to.
Ive been playing around with placing a marker at a distance along a route, I found Mike Willamsons epoly.js and some example files and started to play around with them but for some reason the exact same code doesnt work on my server.
eg
http://www.geocodezip.com/v3_GoogleEx_directions-waypoints_kmmarkersC.html
is a simple example that drops two markers at 2 different distances along the route.
I simply viewed source, copied the entire code and pasted it into an hmtl file on my server, taking care to create the scripts directory and drop v3_epoly.js into it.
As you can see below, my page however does everything except output those 2 important markers.
http://peg-web.me.uk/map/
Am I missing something fundamental?
I know, this forum isnt for the epoly.js add in but Im trying to establish if my problem is more fundamental ie related to javascript itself.
Those marker icons are referenced with relative URLs, copy the icons onto your server, put them in the same relative location to the HTML page and they will appear.
Or change this line in the createMarker function:
icon: getMarkerImage(color),
To (comment the property out):
// icon: getMarkerImage(color),
(that will make them use the default marker icon)
This is driving me crazy. I've been developing some simple embedded Google Maps such as the following:
http://publicworks.snoco.org/rdclosures/snocordclosuregmaps.html
This map in particular has several kml overlays but one of them is no longer displaying the custom placemark icons I had developed and specified. The problem KML layer is this:
http://publicworks.snoco.org/RdClosures/SnocoRdClosures4Gmaps.kml
Some time in the last few months, the custom symbols stopped displaying and have been replaced by the default placemark symbol. If you open the KML file in Google Earth, it displays properly. The KML file does validate using KmlValidator.
Through my searches on here, I saw a suggestion about using definitions at the top of the KML file and then using within each Placemark. I made that change to my KML but it did not appear to make any difference (the custom icons are still not displaying).
I realize that KML files get cached on Google's end so if you look at my javascript code, I'm using the dummy parameter trick with my KML URL path to force a refresh of the layer. The other thing I will note is that the content of this KML is not static and it frequently changes.
Any ideas? Because I'm stumped!
THANKS!
Steve
Agreed with fragileninja that something is happening with your images between your server and Google's. The usual suspects are timing out and 404s (or other server errors).
Since the KML layer is actually being rasterized to tiles on Google's servers, the request has a relatively short timeout so the tiles aren't delayed from being sent to the browser. If the icon images aren't returned in that time, usually Maps will render using the default icon (as it's doing here). However, I also have no trouble getting the icons to work when I host them on my own server, and I don't see atrocious loading times when I access your icons directly, so it is strange.
It's possible that your servers are taking a longer than usual time to respond to Google's servers specifically, or even that they're returning some HTTP error to them instead of an image.
Can you check your server logs to see if you can see the requests and if they're returning as expected?
Finally, if there's no problem there, I would suggest filing a bug on the Maps API issue tracker. Make sure to pick the appropriate template from the dropdown list (you might also consider making a simpler test case, like just using your KML file with the KmlLayer example from the docs) . If you do end up filing a bug, please link it here and I'll make sure it's looked at.
It's something to do with how your server is serving up the images. If I host the icons on mine, it works fine, and your other KML files are using icons from maps.google.com, which also works fine.
Since it works in GE, I'm guessing maybe your server is sending the wrong MIME type or something along those lines. I checked with curl and everything looks fine though, so I'm afraid I can't offer any more details than that. Hopefully this helps get you in the right direction. Good luck!
How do do i add them to my google map ? I've added the marker manager
<script src="http://gmaps-utility-library.googlecode.com/svn/trunk/markermanager/release/src/markermanager.js"></script>
And used the same syntax as in the documentation but they don't show up. The coordinates are correct . Can someone please dumb it down for me . Also does the zoom level have to be to a specific value for me to see them ?
For anyone else in trouble
http://code.google.com/apis/maps/documentation/javascript/examples/index.html
Andrei,
I found the Google Android MapView tutorial to be very helpful:
http://developer.android.com/guide/tutorials/views/hello-mapview.html
It covers creating a basic map application, as well as adding overlays to the MapView, and links to the directions for obtaining the necessary API key. Unfortunately (like a lot of Google's example code, apparently), there are a couple errors in the directions, but I was able to fix those fairly easily.
For example, the definition of your Overlay Class should be:
public class HelloItemizedOverlay extends ItemizedOverlay<OverlayItem>
Which not precisely what the directions say. Eclipse turns out to be very helpful in fixing the problems with this, though.
As to your question about zoom level, it has been my experience that all of your overlays will be displayed as long is your zoom level (or pan state) allows it. If you push them off the screen, they're not displayed, obviously, but not lost either.
R.
I am using the Google map API to integrate the map into my website, I am using custom markers and infowindows. I have used this previously with no worries but now, when I click on my marker, the infowindow displays incorrectly.
I have tried to many different things to try and fix it but I just can't seem to figure out whats going on.
here is an image, I can't attach it to the post since I am new and all that.
http://i47.tinypic.com/xbwmbq.png
Any help would be muchly appreciated.
Thanks
Did you change your DOCTYPE recently? I once had the infowindow start doing funny things like that when I switched to a different DOCTYPE.
Well, I thought I had fixed it, but it turns out I didn't. To fix it I had to turn the the dreaded iframe. Sadly, it will have to stay that way until I find a better fix.